Wheel-dresser.



w. E. ROSS.

WHEEL DRES Fl E SER.

APPUCATSON L D JAN. 27,191i- Patenged Feb. 12, 1918'.

Cleveland, county of Cuyahoga, and State UNITED STATE$ PATENT GITFICE.

WILLIAM E. BOSS; OF CLEVELAND, OHIO, ASSIGNOR TO THE ROSS MANUFAGTURINQ COI'IIIIANY, OF CLEVELAND, OHIO, A COBPORATIQN OF OHIO.

WHEEL-DRESSER.

Specification of Letters Patent.

Patented Feb. 12,1913.

To all whom it may concern:

Be it known that I, WILLIAM E. Ross, a

citizen of the United States, resident of of Ohio, have invented new and useful Im provemcnts in VVheel-Dressers,'of which the following -is'a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle,- so as to distinguish it from other inventions. H

My invention relates to devices for dressing wheels-and particularly to that class of such devices used for dressing carborundum or other composition wheels. Said improvements are designed to have aneffect upon the .wheel that is dressed wholly different i from' that efi'ected by any othendevice of this character with which I am acquainted. Fur- .thermore, my improved wheel dresser is designed to greatly increase the amount of work which can be attained with a wheel of a given character.

The annexed-drawing and the'followin g description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of va rious mechanical forms in which the principle of the inve tion may be applied.

In said annexed drawing Figure 1 represents a side elevation of m improved wheel dresser mounted in a too holder in a new and improved manner here inafter fully described; Fig. 2 represents upon an enlarged scale a broken plan view of my improved wheel dresser; Fig. 3 represhown, these grooves run parallel with sents a central longitudinal section taken in the-plane indicated by the line IIIIII,

Fig. l. and Fig. 4 represents a centralsection taken inthe plane of the axial line of the wheel dresser, as shown by. line IV IV, Fig. 3. 1

The illustratedembodiment of my invention comprises an integral rotatable member 1 in which grooves 2 are formed either .by milling, grinding, die casting, die sinking or in any other Approvedmanner. These grooves in the form shown'ar'e of equal widththroughout, and comprise two series crossing each other and intersecting the two planes of the sides of the member 1, the members of each series being. equidistant from each other, as shown in Fig. 2. In the form planes intersecting the axis of rotation at an 5% the others, is equal in size to every other andE 'YGO lies in the surface of a cylinder whose axis coincides with the axis of rotation of the member 1.

' Each bf these areas furthermore includes two sets of cutting edges 3' 3' and 3" 3f. '6

These edges are" all of equal length-as shown and each of the two edges of a given set is angularlv disposed with reference to the other, also as clearly shown, and lies in a formed, the outermost boundaries of which are lines lying in the surface of a cylinder.

These areas as shown, are disconnected across the face of the cylinder; that is, they constitute a number of separate areas systematioally arranged and detached both lengthwise and crosswise of the cylinder.

I have found that bv altering the size of plane intersectingthe axis of member 1. A 70' number of disconnected areas are thus the areas 3, I obtain different results from the Wheels to which the dresser is applied. iVhen it is desired that the wheel ,to be dressed shall rough finish the work, I decrease the size of the areas and hence the "length of the cutting edges. This may be 86 done byincreasing the number of intersecting grooves 2 or byincreasing the width of the respective grooves. \Vhen the sum of all of these areas is equal to from twenty 20) to forty (40) per cent. of the possible 90 cylindrical area of the member, the tool is suitable for preparing a carborundum or emery wheel for rough finishing. hen this sum is increased to form forty (40) to eighty-five (85) per cent. of the possible cylindrical area, the wheel to which the tool is applied will be suitable for fine finishing the work.

It is desirable and conducive to efiiciency to have the parts of the outer surface of the 00 ,tool remaining, distributed with substantial uniformity throughout the periphery of the Wheel, yet it is not essential that this uniformity be more than reasonably approximate in degree; and I wish to be understood as meaning, when I use the word uniformity, merely a reasonable approximation to. absolute uniformity 'or such uniformity as will provide the same or similar result to that produced by the device shown. It is Obvious also that while the limits of proportions which I have specified above are the useful limits in connection with carborunduni wheels of usual composition, these proportions of dimensions may be varied to some extent, when'my dressing wheels are constructed todress wheels of novel, or less well known composition, and I desire accordingly to be understood as not restricting myself to the percentages specified above, save in the present connection.

It will be noted from the above-described construct-ion that every plane passing through member 1 at right angles to its axis intersects some of the areas 3. This results, from the fact that these areas overlap each other and so no part of the grinding wheel to which the dresser is applied escapes theaction of the cutting edges, regardless of the speed at which the dresser is caused to travel across the periphery of the grinding wheel. Uniformity of operation on the latter is thus obtained.

By providing each area with two cutting edges placed angularly with reference to each other, wedges are formed the apices of which perform the initial part of the operation and such arrangement seems to produce the most advantageous results, although the prime essential appears to consist in the provision of a straight cutting edge located in the surface of a cylinder and an adjacent superficial area also in such surce, together with the staggered relationship of the cutting edges whereby they overlap each other laterally and produce the above-mentioned uniformity of operation.

I have also found, it preferable, though not absolutely. indispensable, to make both sets of grooves'of equal width, as shown.

I have furthermore found that wheels dressed with the above described tool will perform a grinding operation for a greatly increased length of time before it is necessary to again re -dresfs them,'as compared with grinding wheelsidressed by means of other devices heretofoiie known and of which I am aware. i

The above described member may be mounted in any suitable holder or handle but I have illus': "it'ed one form of holder which I have fou. :l tobe suitable and which I shall now descri e.

The member 1 isQp 'roviiled with an axial bore in which is tightly vedged a bushing 4. This bushing is iorrricd with two end conical bearing surfaces 5, Fig. 3 which terminate at their inner ends at a; 0111 ndrical pocket 6, as shown in Fig. 4.. ,Te handle or holder is provided with the, shank 7 formed with a yoke whose two arms 8 are provided with screws 9'whose inner ends 10 are provided with conical journal portions outermost boundaries are lines lying in the surface of a cylinder; said areas extending lengthwise and crosswise of the cylinder and being so located that every plane passing through said member and perpendicular to the axis will intersect some of such areas.

In a wheel dresser, a rotatable member of unitary structure, the surface of which is interrupted by grooves running parallel with planes intersecting the membersaxis at angles other than. one of ninety degrees said grooves being of a form and spaced from each other distances such that disconnected areas are formed extending lengthwise and crosswise of the cylinder and having cutting edges for boundary lines, 9C said areas lying in a cylindrical surface whose axis coincides with the axis of rota tion of said member. 7 3. In a wheel dresser, .a rotatable member formed with a multiplicity of disconnected areas bounded by cutting edges and lying in the surface of a cylinder having its axis coinciding with the axis of rotation of said member, said areas extending lengthwise and crosswise of the cylinder and being l' formed by grooves parallel with planes in terseeting said axis at an angle other than one of ninety degrees (90).

4. In a wheel dresser, a rotatable member provided with a plurality of peripheral relal tively disconnected areas bounded wholly by lines in the shape of helices and lying in the surface of a cylinder having its axiscoihciding with ,(he axis of rotation of said member and' so located that every Plane 1 passing through the member and perpendicular to said axis will intersect such areas, each of the latter including a helix-shaped cutting edge, all of said areas being fixed relatively to each other, said areas detached 1 both lengthwise and crosswise. of the cylinder.

5. In a wheel dresser, a rotatable member provided with a plurality of peripheral relatively disconnected and fixed areas lying in f the surface of a cylinder having its axis coinciding with the axis of rotation of said member, and so located that every plane passing through the member and perpen dicular to said axis will intersect-such areaseach" of the latter including two" straight cutting edges forming an 'an'gle with 'eac'li other. i. V

6. Irrlh wheel dresser, a rotatable member provided with plurality of peripheral rela 35 formed 19? H the surfi ,9 ii ge s 10. In w r ber prov? BEST AVAlLABLE COPY tivel disc I t ar ergn i' w: form size having its axis coinciding with the axis of 13. In a Wheel dresser for rotation of said membe'rtand so located that g-ri dingteheels for. fine finishing the work,

every plane passing through the member and a rotatable member provided with afperiphperpendicular to said wi11l i n rs%2Afgme egiggnrbicRAjihgsinMlfimfififi 0 a cyibut not all of such areas/the spaces etween inder having its axis coinciding with the 65 the latter intersecting the planes of the memaxis 3M e r, the possible peripheral bers sides. fie g' t 111? the outer dimensions of 7. In a Wheel dresser, a rotatable lilemi thggnember being interruptediand the reber provided With a plurality of perip era mi' f o rf Ig M59545; 5. relatively mimzaiseaseaee netsak siii t filiih i siib ii iiiiacg said possi le 70' ing in the surface of a cyliggggg iialafiiialgnts 14s'an9fiin$ng1 h1i%R -c@his 8ing of detached axis coinciding with the axis of said memarmy-bounded by obliqne iiters ecai igg p O 15 her an sol a .hv r gfi passing grooveg i f scape-openings 1 I througii gi, a Gas hhrmignh1c dsst1 Pk 9d qi5 to preparing in the sag asfiaaf asfiyilmiesthennigriiskfidisi isihs i ooolingi coinq'ghgyg witl itheigaxiq masa isdtonmnker, filhe% each snqh aggmbeing provided with tfvo cl1tand 1e ting edgeslyrignhnfljrpirehieestio each mltei' q 110 and resfieotrfimlythyeiighm nfes ilfliiseet c (jg fig 853 3111i 3&0 said axi'eect is to provide t e same with oer aw y 1 A g? fi e ig w heat;

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